Question

Mass m₁ moves on a slope making an angle θ with the horizontal and is attached to mass m₂ by a string passing over a frictionless pulley as shown in Fig. 5.2. The co-efficient of friction between m₁ and the sloping surface is μ.Which of the following statements are true?

(a) If m₂ > m₁ sinθ , the body will move up the plane.

(b) If m₂ >m₁ sinθ + μ cosθ , the body will move up the plane.

(c) If m₂ < m₁ sinθ + μ cosθ , the body will move up the plane.

(d) If m₂ < m₁ sinθ − μ cosθ , the body will move down the plane.

Answer 1

(b) If m₂ >m₁ sinθ + μ cosθ , the body will move up the plane

(d) If m₂ < m₁ sinθ − μ cosθ , the body will move down the plane.